Frequencies for first 10,000 rows of prov4880 variable in posclia2010 dataset :

 shared lab |
  indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,296       42.96       42.96
          N |      5,570       55.70       98.66
          Y |        134        1.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016